AF flashes when drying. checked lint filter, cleaned sheetmetal housing, blower wheel, and wall vent for clogs. dryer hot, clothes wet. sometimes "sensing" stays on for awhile. F29 code once in diagnostic, then F25 most recently but signs still pointing to air flow problems. at a loss before starting with each sensor replacement. your help is of great value and is much appreciated. thank you in advance.
ANSWER DIAGNOSTIC: Displaying Inlet Air Flow
Used to display the air flow value at the inlet of the heater box being measured by
the machine control.
After all saved fault codes have been displayed, press the Wrinkle Shield button to
activate air flow detection. A 30 or 50 second countdown timer will start and the
dryer will turn on.
? If the dryer is cold, the countdown will start at 50 seconds.
NOTE: If the dryer is extremely cold (less than 40°F [4.4°C]) the air flow may
not be detected properly, and “--” will be displayed.
? If the dryer is hot, the countdown timer will start at 30 seconds (cool down
period) followed by an additional 50 second countdown.
A Dryness modifier LED will also be illuminated to indicate the air flow range
corresponding to the number displayed.
¦ The More LED will be illuminated for air flow readings above 40 cfm.
¦ The Normal LED will be illuminated for air flow readings between 29 and 40 cfm.
¦ The Less LED will be illuminated for air flow readings less than 29 cfm.
? If air flow value is low, check to make sure the lint screen is clean, the door
seal is in place and the vent is not obstructed.
Answered by AppliancePartsPros.com | Monday, June 03, 2013